package com.zhimeng.personal.utils;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.drawable.Drawable;
import android.os.Looper;
import android.text.TextUtils;
import android.util.Log;
import android.widget.ImageView;

import com.bumptech.glide.Glide;
import com.bumptech.glide.load.engine.cache.ExternalCacheDiskCacheFactory;
import com.bumptech.glide.load.engine.cache.InternalCacheDiskCacheFactory;
import com.bumptech.glide.request.FutureTarget;
import com.bumptech.glide.request.animation.GlideAnimation;
import com.bumptech.glide.request.target.SimpleTarget;
import com.dingmouren.paletteimageview.PaletteImageView;
import com.zhimeng.personal.R;

import java.io.File;
import java.math.BigDecimal;

import jp.wasabeef.glide.transformations.CropCircleTransformation;

import static com.bumptech.glide.request.target.Target.SIZE_ORIGINAL;

/**
 * Created by sunzhimeng on 10/31/17.
 */

public class GlideUtils {
    private static GlideUtils inst;

    public static GlideUtils getInstance() {
        if (inst == null) {
            inst = new GlideUtils();
        }
        return inst;
    }

    /**
     * 清除图片磁盘缓存
     */
    public void clearImageDiskCache(final Context context) {
        try {
            if (Looper.myLooper() == Looper.getMainLooper()) {
                new Thread(new Runnable() {
                    @Override
                    public void run() {
                        Glide.get(context).clearDiskCache();
// BusUtil.getBus().post(new GlideCacheClearSuccessEvent());
                    }
                }).start();
            } else {
                Glide.get(context).clearDiskCache();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 清除图片内存缓存
     */
    public void clearImageMemoryCache(Context context) {
        try {
            if (Looper.myLooper() == Looper.getMainLooper()) { //只能在主线程执行
                Glide.get(context).clearMemory();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 清除图片所有缓存
     */
    public void clearImageAllCache(Context context) {
        clearImageDiskCache(context);
        clearImageMemoryCache(context);
        String ImageExternalCatchDir = context.getExternalCacheDir() + ExternalCacheDiskCacheFactory.DEFAULT_DISK_CACHE_DIR;
        deleteFolderFile(ImageExternalCatchDir, true);
    }

    /**
     * 获取Glide造成的缓存大小
     *
     * @return CacheSize
     */
    public String getCacheSize(Context context) {
        try {
            return getFormatSize(getFolderSize(new File(context.getCacheDir() + "/" + InternalCacheDiskCacheFactory.DEFAULT_DISK_CACHE_DIR)));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return "";
    }

    /**
     * 获取指定文件夹内所有文件大小的和
     *
     * @param file file
     * @return size
     * @throws Exception
     */
    private long getFolderSize(File file) throws Exception {
        long size = 0;
        try {
            File[] fileList = file.listFiles();
            for (File aFileList : fileList) {
                if (aFileList.isDirectory()) {
                    size = size + getFolderSize(aFileList);
                } else {
                    size = size + aFileList.length();
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return size;
    }

    /**
     * 删除指定目录下的文件，这里用于缓存的删除
     *
     * @param filePath       filePath
     * @param deleteThisPath deleteThisPath
     */
    private void deleteFolderFile(String filePath, boolean deleteThisPath) {
        if (!TextUtils.isEmpty(filePath)) {
            try {
                File file = new File(filePath);
                if (file.isDirectory()) {
                    File files[] = file.listFiles();
                    for (File file1 : files) {
                        deleteFolderFile(file1.getAbsolutePath(), true);
                    }
                }
                if (deleteThisPath) {
                    if (!file.isDirectory()) {
                        file.delete();
                    } else {
                        if (file.listFiles().length == 0) {
                            file.delete();
                        }
                    }
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * 格式化单位
     *
     * @param size size
     * @return size
     */
    private static String getFormatSize(double size) {

        double kiloByte = size / 1024;
        if (kiloByte < 1) {
            return size + "Byte";
        }

        double megaByte = kiloByte / 1024;
        if (megaByte < 1) {
            BigDecimal result1 = new BigDecimal(Double.toString(kiloByte));
            return result1.setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString() + "KB";
        }

        double gigaByte = megaByte / 1024;
        if (gigaByte < 1) {
            BigDecimal result2 = new BigDecimal(Double.toString(megaByte));
            return result2.setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString() + "MB";
        }

        double teraBytes = gigaByte / 1024;
        if (teraBytes < 1) {
            BigDecimal result3 = new BigDecimal(Double.toString(gigaByte));
            return result3.setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString() + "GB";
        }
        BigDecimal result4 = new BigDecimal(teraBytes);

        return result4.setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString() + "TB";
    }

    public String getImgPathFromCache(String url, Context context) {
        FutureTarget<File> target = Glide.with(context).load(url).downloadOnly(SIZE_ORIGINAL, SIZE_ORIGINAL);
        try {
            File cacheFile = target.get();
            return cacheFile.getAbsolutePath();
        } catch (Exception e) {
            Log.i("cache", "Exception:-" + e.toString());
        }
        return null;
    }

    public void loadRoundImage(Context context, String url, ImageView imageView) {
        Glide.with(context).load(url)
                .placeholder(R.mipmap.ic_launcher)
                .bitmapTransform(new CropCircleTransformation(context))
                .crossFade()
                .into(imageView);
    }

    public void loadRoundImage(Context context, String url, ImageView imageView, int holderRes) {
        Glide.with(context).load(url)
                .bitmapTransform(new CropCircleTransformation(context))
                .crossFade()
                .into(imageView);
    }

    public void loadRoundImage(Context context, String url, final PaletteImageView imageView) {
        Glide.with(context).load(url).asBitmap().into(new SimpleTarget<Bitmap>() {
            @Override
            public void onResourceReady(Bitmap resource, GlideAnimation<? super Bitmap> glideAnimation) {
                imageView.setBitmap(resource);
            }

            @Override
            public void onLoadFailed(Exception e, Drawable errorDrawable) {
                super.onLoadFailed(e, errorDrawable);
            }
        });
    }

    public void loadImage(Context context, String url, ImageView imageView) {
        Glide.with(context).load(url)
                .placeholder(R.mipmap.ic_launcher)
                .crossFade()
                .into(imageView);
    }

    public void downloadasBitmap(Context context, String url, final GlideDownloadCallback callback) {
        Glide.with(context).load(url).asBitmap().into(new SimpleTarget<Bitmap>() {
            @Override
            public void onResourceReady(Bitmap resource, GlideAnimation<? super Bitmap> glideAnimation) {
                if (callback != null) {
                    callback.handleBitmap(resource);
                }
            }

            @Override
            public void onLoadFailed(Exception e, Drawable errorDrawable) {
                super.onLoadFailed(e, errorDrawable);
            }
        });
    }

    public interface GlideDownloadCallback {
        void handleBitmap(Bitmap bitmap);
    }
}


